build: bump gradle/gradle-build-action from 2.1.5 to 2.4.0

Bumps [gradle/gradle-build-action](https://github.com/gradle/gradle-build-action) from 2.1.5 to 2.4.0.
- [Release notes](https://github.com/gradle/gradle-build-action/releases)
- [Commits](fec4a42eb0...6095a76664)

---
updated-dependencies:
- dependency-name: gradle/gradle-build-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -29,6 +29,6 @@ jobs:
         java-version: '11'
         distribution: 'temurin'
     - name: Build with Gradle
-      uses: gradle/gradle-build-action@0d13054264b0bb894ded474f08ebb30921341cee
+      uses: gradle/gradle-build-action@6095a76664413da4c8c134ee32e8a8ae900f0f1f
       with:
         arguments: build

.github/workflows/publish.yml

@@ -30,14 +30,14 @@ jobs:
         settings-path: ${{ github.workspace }} # location for the settings.xml file
 
     - name: Build with Gradle
-      uses: gradle/gradle-build-action@0d13054264b0bb894ded474f08ebb30921341cee
+      uses: gradle/gradle-build-action@6095a76664413da4c8c134ee32e8a8ae900f0f1f
       with:
         arguments: build
 
     # The USERNAME and TOKEN need to correspond to the credentials environment variables used in
     # the publishing section of your build.gradle
     - name: Publish to GitHub Packages
-      uses: gradle/gradle-build-action@0d13054264b0bb894ded474f08ebb30921341cee
+      uses: gradle/gradle-build-action@6095a76664413da4c8c134ee32e8a8ae900f0f1f
       with:
         arguments: publish
       env:

build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
     // Apply the org.jetbrains.kotlin.jvm Plugin to add support for Kotlin.
-    kotlin("jvm") version "1.6.20"
+    kotlin("jvm") version "1.6.21"
     id("org.jetbrains.dokka") version "1.6.21"
 
     // Apply the java-library plugin for API and implementation separation.